sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

/* Add/Remove Classes */

function toggleClass(target,classValue){
	var pattern = new RegExp("(^| )" + classValue + "( |$)");

	if(!pattern.test(target.className)){
		if(target.className == ""){
			target.className == classValue;
		}else{
			target.className += " " + classValue;
		}
	}else{
		removeClass(target,classValue)
	}
	
	return true;
}

function removeClass(target, classValue){
	var removedClass = target.className;
	var pattern = new RegExp("(^| )" + classValue + "( |$)");
	
	removedClass = removedClass.replace(pattern, "$1");
	removedClass = removedClass.replace(/ $/, "");
	
	target.className = removedClass;
	
	return true;
}

function CalendarViewTypeClass(target)
{
    
    
    var month=document.getElementsByName('month');
    var week=document.getElementsByName('week');
    var day=document.getElementsByName('day');
    
    
    if (month.length == 1 && week.length == 1 && day.length == 1){
        if (target.name == "day")
        {
            month[0].className = "";
            week[0].className = "";
            target.className = "active"
        }
        else if (target.name == "month")
        {   
            target.className = "active";
            week[0].className = "";
            day[0].className = ""
        }
        else
        {
            month[0].className = "";
            target.className = "active";
            day[0].className = ""
        }

    }
}

function ClearSearch(theText) 
{
     if (theText.value == "Search Engineering")
     {
         theText.value = ""
     }
}